NAS Synology RackStation RS1221RP+ / RS1221+ RAID Controller Failure: Causes, Recovery Solutions, and Data Recovery Techniques

RAID controller failure on ⭐ NAS: causes, consequences, and how to recover your data.

NAS Synology RackStation RS1221RP+ / RS1221+ RAID Controller Failure: Causes, Recovery Solutions, and Data Recovery Techniques

Synology RackStation RS1221RP+ / RS1221+ NAS Data Recovery in 2024

In this step-by-step tutorial, we’ll show you how to rebuild your RAID and recover data from RackStation RS1221RP+ / RS1221+.

NAS Synology RackStation RS1221RP+ / RS1221+ RAID Controller Failure: Causes, Recovery Solutions, and Data Recovery Techniques

RAID Recovery™ 2.6
Recover data from damaged RAID arrays inaccessible from a computer.
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Why can’t ordinary software tools restore files from RAID?

Conventional hard disks keep user’s data by writing it to their surface in a consecutive way, and this is how an entire file is stored on a single hard disk. However, when data is written to a RAID system, a file is divided into several parts. Then these parts are written consecutively to all hard disks within such array. The size of such parts may range from 2 KB to 2 MB, so each file is stored on several hard disks at the same time.

Such approach helps to speed up read and write operations, and it is evident that saving two parts of a file having the size of 1 GB to two hard disks simultaneously is much faster than saving the same 1 GB of data to one hard disk. However, this peculiarity makes file recovery more complicated.

Various RAID levels store information in different ways. Additionally, manufacturers like Synology also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

How can regular data verification or checksum processes help maintain data integrity on NAS Synology RackStation RS1221RP+ / RS1221+ devices?

Regular data verification or checksum processes can help maintain data integrity on NAS Synology RackStation RS1221RP+ / RS1221+ devices in the following ways:

  1. Detecting data corruption: Regular data verification processes involve comparing the checksum of the stored data with the calculated checksum. If there is a mismatch, it indicates that the data has been corrupted or altered. By performing regular data verification, any data corruption can be identified and addressed promptly.
  2. Preventing silent data corruption: Silent data corruption refers to the situation where data gets corrupted without any immediate indication or error message. Regular data verification processes can help in detecting silent data corruption by comparing the stored checksum with the calculated checksum.
  3. Ensuring data consistency: Data verification processes validate the integrity and consistency of the stored data. By comparing the checksum, any inconsistencies or discrepancies in the data can be identified and corrected.
  4. Early detection of hardware issues: Regular data verification processes can also help in identifying potential hardware issues. If data corruption occurs frequently or consistently, it could indicate problems with the storage media, such as failing hard drives or faulty cables. By detecting these issues early, appropriate actions can be taken to prevent data loss.
  5. Maintaining data reliability: Data verification processes provide an additional layer of protection against data corruption. By regularly verifying the integrity of the stored data, the NAS device can ensure that the data remains reliable and accurate over time.

It is important to note that data verification processes should be performed regularly and systematically to maximize the effectiveness of maintaining data integrity on NAS Synology RackStation RS1221RP+ / RS1221+ devices.

How to take hard disks out of the NAS and connect them to a PC?

Although NAS RackStation RS1221RP+ / RS1221+ can be accessed over the network, you still need to take the hard disks out of the storage device and connect them to a Windows computer. Only in this case will the software be able to scan them properly. Here is what you should do:

  1. Turn off the storage and disconnect it from the power supply.

    WARNING! Before you start taking hard disks out of your NAS device, read the manual carefully. Incorrect actions may damage your network-attached storage and/or the hard disks within the RAID system.

  2. Take the hard disks out of the NAS one by one, carefully removing them from their slots. Remember that the disks are extremely vulnerable: hitting or dropping them may result in serious physical damage.

  3. Make sure to mark each hard disk in accordance with how they were installed inside the NAS.

  4. Remove the hard disks and connect them to the computer. In this video, we have explored what ports are used to connect hard disks, and what to do if there are not enough ports or connectors.

    Go to view
    How to Order Remote Data Recovery

    How to Order Remote Data Recovery

Restoring data with Hetman RAID Recovery

Hetman Raid Recovery

This program recovers data from damaged RAID arrays and is fully compatible with Synology RackStation RS1221RP+ / RS1221+. The hard disks that make up the RAID contain technical information about the algorithm used to save files. When launched, Hetman RAID Recovery reads this information and puts the damaged array together. Then you can open the disk and save your files. Also, you can recover the files accidentally deleted from the network drive.

Go to view
How to recover data from a Synology

How to recover data from a Synology

RackStation RS1221RP+ / RS1221+ has 8 HDD slots, and it supports the following array types:

  • Synology Hybrid RAID (SHR);
  • RAID 6;
  • RAID 5;
  • RAID 10;
  • RAID 1;
  • RAID 0;
  • Basic;
  • JBOD;

NAS supports:

  • Btrfs;
  • EXT4;
  • EXT3 (External Disk Only);
  • FAT32 (External Disk Only);
  • exFAT (External Disk Only);
  • NTFS (External Disk Only);
  • HFS+ (External Disk Read Only);

Safe recovery from disk images

This utility lets you save an entire copy of the disk to file and then work with this image instead of the actual disk. Such feature helps to protect data on the disk from:

  • Overwriting during the recovery process;
  • Loss resulting from bad sectors;
  • User mistakes.

To create an image, do the following:

  1. Make sure that you have enough free space to save the image. The image file size usually equals the disk size.

  2. Select the disk in the main window, and choose from the menu ToolsSave Disk. You can select multiple disks to be saved.

  3. When the image creation wizard starts, you can choose to save the entire disk or select only a part of it. Specify the parameters and click Next.

    Hetman Raid Recovery: Image Creation Wizard
  4. At this stage, you need to choose a directory where to save the image. Choose any disk connected to this PC, or save the image by FTP.

    Hetman Raid Recovery: hoose any disk connected to this PC, or save the image by FTP

Where are user’s files stored?

The Synology RackStation RS1221RP+ / RS1221+ network-attached storage keeps DSM (DiskStation Manager) operating system files on a separate RAID 1 (mirrored) array. Usually, all NAS systems create several volumes on every hard disk, and the first of them takes up to 2 Gb of space. This is where operating system files are stored. Other volumes are united into a RAID array where user’s data is written.

Comparison of software for RAID recovery

Product Operating system License type RAID controller support Supported file systems Virtual RAID controller support Data recovery from damaged RAID File preview
Hetman RAID Recovery Windows Paid Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
DiskInternals RAID Recovery Windows Paid Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
R-Studio Windows, Mac, Linux Paid Yes, over 200 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
UFS Explorer RAID Recovery Windows, Mac, Linux Paid Yes, over 1,000 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes
EaseUS Data Recovery Windows Paid Yes, over 20 controllers FAT, NTFS, Ext2/3/4, HFS+ No Yes Yes
ReclaiMe Free RAID Recovery Windows Free Yes, over 100 controllers FAT, NTFS, Ext2/3/4, HFS+ Yes Yes Yes

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  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 9.08.2022 12:31 #
    If you want to ask a question about data recovery, from NAS RackStation RS1221RP+ / RS1221+, feel free to leave a comment!
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Vladimir Artiukh

Author: Vladimir Artiukh, Technical Writer

Vladimir Artiukh is a technical writer for Hetman Software, as well as the voice and face of their English-speaking YouTube channel, Hetman Software: Data Recovery for Windows. He handles tutorials, how-tos, and detailed reviews on how the company’s tools work with all kinds of data storage devices.

Oleg Afonin

Editor: Oleg Afonin, Technical Writer

Oleg Afonin is an expert in mobile forensics, data recovery and computer systems. He often attends large data security conferences, and writes several blogs for such resources as xaker.ru, Elcomsoft and Habr. In addition to his online activities, Oleg’s articles are also published in professional magazines. Also, Oleg Afonin is the co-author of a well-known book, Mobile Forensics - Advanced Investigative Strategies.

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Questions and answers

  • What are the key features and capabilities of the Synology RackStation RS1221RP+ / RS1221+ that make it suitable for video streaming applications?

    The Synology RackStation RS1221RP+ / RS1221+ has several key features and capabilities that make it suitable for video streaming applications:

    1. High-performance CPU: It is equipped with an AMD Ryzen V1500B quad-core processor, providing powerful computing power for video transcoding and streaming.
    2. Hardware encryption engine: The built-in AES-NI hardware encryption engine ensures secure and efficient data transmission, which is crucial for video streaming applications that require protection of sensitive content.
    3. Scalable storage capacity: The RS1221RP+ / RS1221+ supports up to 12 drive bays, allowing for significant storage capacity expansion. This is essential for storing large video files and accommodating the growing demands of video streaming applications.
    4. High-speed connectivity: It features dual 2.5GbE ports, enabling fast and reliable network connections for smooth video streaming. Additionally, it supports link aggregation and failover, ensuring uninterrupted streaming even in case of network failures.
    5. SSD caching and NVMe support: The RackStation supports SSD caching, which enhances the overall performance of video streaming by accelerating data access. It also supports NVMe SSDs, enabling even faster storage performance.
    6. Virtualization support: With support for virtualization technologies such as VMware, Citrix, and Microsoft Hyper-V, the RS1221RP+ / RS1221+ can be integrated into virtualized environments, making it easier to deploy and manage video streaming applications.
    7. Comprehensive multimedia applications: Synology's DiskStation Manager (DSM) software provides a range of multimedia applications, such as Video Station, Plex, and DS video, which enable easy organization, streaming, and sharing of video content.
    8. Redundancy and reliability: The RS1221RP+ model comes with redundant power supplies, ensuring uninterrupted operation even in case of a power supply failure. This redundancy feature is crucial for video streaming applications that require high availability.

    Overall, the Synology RackStation RS1221RP+ / RS1221+ offers a combination of powerful hardware, scalable storage, high-speed connectivity, and multimedia applications, making it a suitable choice for video streaming applications that require performance, reliability, and security.

  • Can the Synology RackStation RS1221RP+ / RS1221+ support multiple concurrent video streams without any performance degradation?

    Yes, the Synology RackStation RS1221RP+ / RS1221+ is designed to support multiple concurrent video streams without any performance degradation. It is equipped with a powerful processor and ample memory to handle multiple tasks simultaneously, including video streaming. Additionally, it supports hardware acceleration for video transcoding, which further enhances its ability to handle multiple streams efficiently.

  • Are there any specific video streaming protocols or formats that the Synology RackStation RS1221RP+ / RS1221+ is optimized for?

    The Synology RackStation RS1221RP+ / RS1221+ supports a wide range of video streaming protocols and formats. Some of the commonly used protocols and formats optimized for this device include:

    1. RTSP (Real-Time Streaming Protocol): Used for streaming live video or on-demand content.
    2. HLS (HTTP Live Streaming): A popular protocol for adaptive streaming, commonly used for streaming video on the web.
    3. MPEG-DASH (Dynamic Adaptive Streaming over HTTP): Another adaptive streaming protocol that allows for efficient video delivery over HTTP.
    4. Smooth Streaming: Microsoft's adaptive streaming protocol, primarily used for streaming on Windows devices.
    5. FTP (File Transfer Protocol): Although not specifically for video streaming, FTP can be used to transfer video files to and from the device.

    In terms of video formats, the Synology RackStation RS1221RP+ / RS1221+ supports a wide range of formats, including but not limited to:

    1. H.264 (AVC): A widely used video compression format.
    2. H.265 (HEVC): A more advanced video compression format that offers better compression efficiency.
    3. MPEG-2: A standard video compression format often used for DVD and broadcast applications.
    4. VP9: A video compression format developed by Google, known for its high compression efficiency.
    5. AVI, MP4, MKV, MOV, and other popular container formats.

    It's important to note that the specific video streaming protocols and formats supported may vary depending on the software and applications installed on the Synology RackStation RS1221RP+ / RS1221+.

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